Unification with Vector-like fermions and signals at LHC

Understand

We look for minimal extensions of Standard Model with vector like fermions leading to precision unification of gauge couplings.

• Constraints from proton decay, Higgs stability and perturbativity are considered.
• The simplest models contain several copies of vector fermions in two different (incomplete) representations.
• Some of these models encompass Type III seesaw mechanism for neutrino masses whereas some others have a dark matter candidate.